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# Copyright 2013 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Centos specific platform info."""
import os
import platform
import re
from gcimagebundlelib import linux
class Centos(linux.LinuxPlatform):
"""Centos specific information."""
@staticmethod
def IsThisPlatform(root='/'):
release_file = root + '/etc/redhat-release'
if os.path.exists(release_file):
(_, _, flavor, _) = Centos.ParseRedhatRelease(release_file)
if flavor and flavor.lower() == 'centos':
return True
return False
@staticmethod
def ParseRedhatRelease(release_file='/etc/redhat-release'):
"""Parses the /etc/redhat-release file."""
f = open(release_file)
lines = f.readlines()
f.close()
if not lines:
return (None, None, None, None)
line0 = lines[0]
# Matches both CentOS 6 and CentOS 7 formats.
# CentOS 6: CentOS release 6.5 (Final)
# CentOS 7: CentOS Linux release 7.0.1406 (Core)
g = re.match(r'(\S+)( Linux)? release (\d+(\.\d+)+) \(([^)]*)\)', line0)
if not g:
return (None, None, None, None)
(osname, version, label) = (g.group(1), g.group(3), g.group(5))
return (osname, label, osname, version)
def __init__(self):
super(Centos, self).__init__()
(self.distribution_codename, _, self.distribution,
self.distribution_version) = Centos.ParseRedhatRelease()
def GetPreferredFilesystemType(self):
(_,version,_) = platform.linux_distribution()
if version.startswith('7'):
return 'xfs'
return 'ext4'
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